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authorLudovic Desroches <ludovic.desroches@atmel.com>2013-11-20 19:01:11 +0400
committerChris Ball <chris@printf.net>2014-01-13 21:48:12 +0400
commit66b512eda74d59b17eac04c4da1b38d82059e6c9 (patch)
tree6186546f541c530392c2868330fdc630d7cf4e58 /drivers/hwmon/ultra45_env.c
parentdd006b3081ccf01ee5ef07dcf8ff274626dbf80b (diff)
downloadlinux-66b512eda74d59b17eac04c4da1b38d82059e6c9.tar.xz
mmc: atmel-mci: fix timeout errors in SDIO mode when using DMA
With some SDIO devices, timeout errors can happen when reading data. To solve this issue, the DMA transfer has to be activated before sending the command to the device. This order is incorrect in PDC mode. So we have to take care if we are using DMA or PDC to know when to send the MMC command. Cc: stable <stable@vger.kernel.org> # 3.2+ Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'drivers/hwmon/ultra45_env.c')
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